<script setup lang="ts">
import type { ConsultIllness, Image } from '@/types/consult'
import { ref, computed, onMounted } from 'vue'
import { uploadImage } from '@/services/consult'
import{ showToast, showConfirmDialog } from 'vant'
import { useConsultStore } from '@/stores'
import { useRouter } from 'vue-router'
import { timeOptions, flagOptions } from '@/services/constants'
import type { UploaderAfterRead, UploaderFileListItem } from 'vant/lib/uploader/types'


const form = ref<ConsultIllness>({
    illnessDesc: '',
    //不需要默认激活某一个按钮，所以默认undefined
    illnessTime: undefined,
    consultFlag: undefined,
    pictures: []
})

//上传图片
const fileList = ref<Image[]>([])
//UploaderAfterRead是下面:after-read="onAfterRead"的默认类型
const onAfterRead: UploaderAfterRead = (item) => {
    /* Array.isArray(item)判断item是不是数组 */
    if (Array.isArray(item)) return
    if (!item.file) return
    //item.status是上传组件自带的，上传成功执行.then里面内容，上传失败执行.catch里面内容
    item.status = 'uploading'
    item.message = '上传中...'
    uploadImage(item.file).then((res) => {
        item.status = 'done'
        item.message = undefined
        item.url = res.data.url
        //同步数据，将图片追加到form表单中
        form.value.pictures?.push(res.data)
    }).catch (() => {
        item.status = 'failed'
        item.message = '上传失败'
    })
}
const onDeleteImg = (item: UploaderFileListItem) => {
    form.value.pictures = form.value.pictures?.filter(
        (pic) => pic.url !== item.url
    )
}
//下一步按钮默认灰色，内容填写完整激活为绿色
const disabled = computed(() => 
  !form.value.illnessDesc || 
  form.value.illnessTime === undefined || 
  form.value.consultFlag === undefined
)
const store = useConsultStore()
const router = useRouter()
const next = () => {
    if(!form.value.illnessDesc) return showToast('请输入病情描述')
    if(form.value.illnessTime === undefined) return showToast('请选择症状的持续时间')
    if(form.value.consultFlag === undefined) return showToast('请选择是否就诊过')
    //记录
    store.setIllness(form.value)
    //跳转，携带标识
    router.push('/user/patient?isChange=1')
}

//数据的回显
onMounted(() => {
    if (store.consult.illnessDesc) {
        showConfirmDialog({
            title: '温馨提示',
            message: '是否恢复之前填写的病情信息？',
            closeOnPopstate: false
        }).then(() => {
            //回显数据
            const { illnessDesc, illnessTime, consultFlag, pictures } = store.consult
            form.value = { illnessDesc, illnessTime, consultFlag, pictures }
            fileList.value = pictures || []
        })
    }
})
</script>

<template>
  <div class="consult-illness-page">
    <cp-nav-bar title="图文问诊" />
    <!-- 医生提示 -->
    <div class="illness-tip van-hairline--bottom">
      <img class="img" src="@/assets/avatar-doctor.svg" />
      <div class="info">
        <p class="tit">在线医生</p>
        <p class="tip">
          请描述你的疾病或症状、是否用药、就诊经历，需要我听过什么样的帮助
        </p>
        <p class="safe">
          <cp-icon name="consult-safe" /><span>内容仅医生可见</span>
        </p>
      </div>
    </div>
    <!-- 收集信息 -->
    <div class="illness-form">
      <van-field
        type="textarea"
        rows="3"
        placeholder="请详细描述您的病情，病情描述不能为空"
        v-model="form.illnessDesc"
      ></van-field>
      <div class="item">
        <p>本次患病多久了？</p>
        <!-- cp-radio-btn是什么，怎么让options和上面的timeOptions联系起来的，v-model="form.illnessDesc"起什么作用 -->
        <cp-radio-btn :options="timeOptions" v-model="form.illnessTime"></cp-radio-btn>
      </div>
      <div class="item">
        <p>此次病情是否去医院就诊过？</p>
        <cp-radio-btn :options="flagOptions" v-model="form.consultFlag"></cp-radio-btn>
      </div>
      <div class="illness-img">
        <!-- :after-read文件上传之后的回调函数
            @delete删除文件预览时触发 -->
        <van-uploader
            max-count="9"
            :max-size="5 * 1024 * 1024"
            upload-icon="photo-o"
            upload-text="上传图片"
            v-model="fileList"
            :after-read="onAfterRead"
            @delete="onDeleteImg"
        ></van-uploader>
        <p class="tip" v-if="!fileList.length">上传内容仅医生可见，最多9张图，最大5MB</p>
      </div>
      <!-- 下一步 -->
       <van-button 
        :class="{disabled}" 
        type="primary" 
        block 
        round
        @click="next"
        >下一步</van-button>
    </div>
  </div>
</template>

<style lang="scss" scoped>
.consult-illness-page {
  padding-top: 46px;
  .van-button {
    font-size: 16px;
    margin-bottom: 30px;
    &.disabled {
        opacity: 1;
        background: #fafafa;
        color: #d9dbde;
        border: #fafafa;
    }
}
}
.illness-tip {
  display: flex;
  padding: 15px;
  .img {
    width: 52px;
    height: 52px;
    border-radius: 4px;
    overflow: hidden;
    margin-top: 10px;
  }
  .info {
    flex: 1;
    padding-left: 12px;
    .tit {
      font-size: 16px;
      margin-bottom: 5px;
    }
    .tip {
      padding: 12px;
      background: var(--cp-bg);
      color: var(--cp-text3);
      font-size: 13px;
      margin-bottom: 10px;
    }
    .safe {
      font-size: 10px;
      color: var(--cp-text3);
      display: flex;
      align-items: center;
      .cp-icon {
        font-size: 12px;
        margin-right: 2px;
      }
    }
  }
}
.illness-form {
  padding: 15px;
  .van-field {
    padding: 0;
    &::after {
      border-bottom: none;
    }
  }
  .item {
    > p {
      color: var(--cp-text3);
      padding: 15px 0;
    }
  }
}
.illness-img {
    padding-top: 16px;
    margin-bottom: 40px;
    display: flex;
    align-items: center;
    .tip {
        font-size: 12px;
        color: var(--cp-tip);
    }
    /* vue的深度选择器，让样式能够影响到子组件内部的元素 */
    ::v-deep() {
        .van-uploader {
            &__preview {
                &-delete {
                    left: -6px;
                    top: -6px;
                    border-radius: 50%;
                    background-color: var(--cp-primary);
                    width: 20px;
                    height:20px;
                    &-icon {
                        /* scale(0.9)将图标缩小到原始大小的90%，translate(-22%, 22%)将图标向左移动 22% 并向下移动 22% */
                        transform: scale(0.9) translate(-22%, 22%);
                    }
                }
                &-image {
                    border-radius: 8px;
                    overflow: hidden;
                }
            }
            &__upload {
                border-radius: 8px;
            }
            &__upload-icon {
                color: var(--cp-text3);
            }
        }
    }
}
</style>
